/* $OpenBSD: km.c,v 1.5 2011/05/31 00:19:55 deraadt Exp $ */ /* * Copyright (c) 2008 Constantine A. Murenin <cnst+openbsd@bugmail.mojo.ru> * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include <sys/param.h> #include <sys/systm.h> #include <sys/device.h> #include <sys/sensors.h> #include <machine/bus.h> #include <dev/pci/pcireg.h> #include <dev/pci/pcivar.h> #include <dev/pci/pcidevs.h> /* * AMD Family 10h/11h/14h Processors, Function 3 -- Miscellaneous Control */ /* Function 3 Registers */ #define KM_REP_TEMP_CONTR_R 0xa4 #define KM_THERMTRIP_STAT_R 0xe4 #define KM_NORTHBRIDGE_CAP_R 0xe8 #define KM_CPUID_FAMILY_MODEL_R 0xfc /* Operations on Reported Temperature Control Register */ #define KM_GET_CURTMP(r) (((r) >> 21) & 0x7ff) /* Operations on Thermtrip Status Register */ #define KM_GET_DIODEOFFSET(r) (((r) >> 8) & 0x7f) struct km_softc { struct device sc_dev; pci_chipset_tag_t sc_pc; pcitag_t sc_pcitag; struct ksensor sc_sensor; struct ksensordev sc_sensordev; }; int km_match(struct device *, void *, void *); void km_attach(struct device *, struct device *, void *); void km_refresh(void *); struct cfattach km_ca = { sizeof(struct km_softc), km_match, km_attach }; struct cfdriver km_cd = { NULL, "km", DV_DULL }; static const struct pci_matchid km_devices[] = { { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_AMD64_10_MISC }, { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_AMD64_11_MISC }, { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_AMD64_14_MISC } }; int km_match(struct device *parent, void *match, void *aux) { /* successful match supersedes pchb(4) */ return pci_matchbyid((struct pci_attach_args *)aux, km_devices, sizeof(km_devices) / sizeof(km_devices[0])) * 2; } void km_attach(struct device *parent, struct device *self, void *aux) { struct km_softc *sc = (struct km_softc *)self; struct pci_attach_args *pa = aux; sc->sc_pc = pa->pa_pc; sc->sc_pcitag = pa->pa_tag; strlcpy(sc->sc_sensordev.xname, sc->sc_dev.dv_xname, sizeof(sc->sc_sensordev.xname)); sc->sc_sensor.type = SENSOR_TEMP; sensor_attach(&sc->sc_sensordev, &sc->sc_sensor); if (sensor_task_register(sc, km_refresh, 5) == NULL) { printf(": unable to register update task\n"); return; } sensordev_install(&sc->sc_sensordev); printf("\n"); } void km_refresh(void *arg) { struct km_softc *sc = arg; struct ksensor *s = &sc->sc_sensor; pcireg_t r; int c; r = pci_conf_read(sc->sc_pc, sc->sc_pcitag, KM_REP_TEMP_CONTR_R); c = KM_GET_CURTMP(r); s->value = c * 125000 + 273150000; }